Analysis
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max time kernel
29s -
max time network
33s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system -
submitted
31-05-2023 18:32
Behavioral task
behavioral1
Sample
stub.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
stub.exe
Resource
win10v2004-20230220-en
General
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Target
stub.exe
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Size
1.6MB
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MD5
0bbe9bc948d0154a739c23b4b0521ea1
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SHA1
74a5c37500bfec5286ec4f0e56663eafb536b9f3
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SHA256
8a37cfdf9c3d4beca639ead3b11688360333a550aedb60d4dbff82140b9b417e
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SHA512
78eac69129b53416221fd6663158db0b6d528ad070b8c9887293212639a2c28c20eddbf148c024bd84ea8386992dcb989ded93727d747a46c97ee751f96e92da
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SSDEEP
24576:i3i2Q9NXw2/wPOjdGxY2rqkqjVnlqud+/2P+A+ZecdyFoBkkAnexMrdgL4:nTq24GjdGSiqkqXfd+/9AqYanieKd
Malware Config
Signatures
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Stealerium
An open source info stealer written in C# first seen in May 2022.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 1128 timeout.exe -
Kills process with taskkill 1 IoCs
Processes:
taskkill.exepid process 1772 taskkill.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
stub.exetaskkill.exedescription pid process Token: SeDebugPrivilege 2016 stub.exe Token: SeDebugPrivilege 1772 taskkill.exe -
Suspicious use of WriteProcessMemory 16 IoCs
Processes:
stub.execmd.exedescription pid process target process PID 2016 wrote to memory of 560 2016 stub.exe cmd.exe PID 2016 wrote to memory of 560 2016 stub.exe cmd.exe PID 2016 wrote to memory of 560 2016 stub.exe cmd.exe PID 2016 wrote to memory of 560 2016 stub.exe cmd.exe PID 560 wrote to memory of 1720 560 cmd.exe chcp.com PID 560 wrote to memory of 1720 560 cmd.exe chcp.com PID 560 wrote to memory of 1720 560 cmd.exe chcp.com PID 560 wrote to memory of 1720 560 cmd.exe chcp.com PID 560 wrote to memory of 1772 560 cmd.exe taskkill.exe PID 560 wrote to memory of 1772 560 cmd.exe taskkill.exe PID 560 wrote to memory of 1772 560 cmd.exe taskkill.exe PID 560 wrote to memory of 1772 560 cmd.exe taskkill.exe PID 560 wrote to memory of 1128 560 cmd.exe timeout.exe PID 560 wrote to memory of 1128 560 cmd.exe timeout.exe PID 560 wrote to memory of 1128 560 cmd.exe timeout.exe PID 560 wrote to memory of 1128 560 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\stub.exe"C:\Users\Admin\AppData\Local\Temp\stub.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2016 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp3FCF.tmp.bat2⤵
- Suspicious use of WriteProcessMemory
PID:560 -
C:\Windows\SysWOW64\chcp.comchcp 650013⤵PID:1720
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C:\Windows\SysWOW64\taskkill.exeTaskKill /F /IM 20163⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1772 -
C:\Windows\SysWOW64\timeout.exeTimeout /T 2 /Nobreak3⤵
- Delays execution with timeout.exe
PID:1128
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
57B
MD542e52bfaa667927b4b613a222f3a6f4c
SHA1b699abc4ef08a6dfaf5ea210762057e1ecee0aa5
SHA256ce07a3388114fc1f709a8fdf5b196d62771a3a79b2aafc9cf1aeedd9d32d7969
SHA512af20cdc34fe0795d09ebd35816e3b294b37c9fc1a74800aa8347da33625e39d49556d59eff426d1de0753279d7f0a782492e072157cbf1d358fc4b653737d2bb